Metals Sorption and pH
Tech Tip At the ambient pH of most aquifers many dissolved metals (Ag, Ba, Cd, Cr, Cu, Fe, Li, Mn, Ni, Pb, Zn) are present as positively charged ions (cations). Transport of these [...]
Where Do Ketones and Butanol Come From during ERD?
Tech Tip Acetone, butanol and other ketones are often detected at low levels during anaerobic bioremediation (Jacob et al., Battelle Bioremediation Symposium Proceedings, 2005). These compounds can be produced during anaerobic fermentation by the [...]
Why Can’t I Control the pH of My Aquifer?
Tech Tip Why can’t I control the pH of my aquifer? pH and Acidity are not the same Acidity is the amount of base required to neutralize acids present in a water sample. This [...]
Converting Field ORP Measurements Into Eh
Tech Tip Eh or reduction potential can be used to evaluate subsurface geochemical conditions by comparing measured values to published values of Eh for different reactions or used in combination for pH measurements to [...]